Marin Mersenne 2^P-1
Username
Password
Forgot password?
Black
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
156485429Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
407307651287198256522690892685.12025-09-16 14:15:26
P-1 factors
DateFactorB1B2
2025-09-164073076512871982565226908986600081098094
History
DateUserTypeResult
2025-09-16Ryan PropperF-PM1
Factor: 40730765128719825652269089 / (P-1, B1=866000, B2=81098094)
2025-05-20iucasNF
no factor from 2^77 to 2^78
2024-10-14mezonNF
no factor from 2^76 to 2^77
2024-08-19SRBaseNF
no factor from 2^75 to 2^76
2023-02-22SRBaseNF
no factor from 2^74 to 2^75
2022-03-19LordJuliusNF
no factor from 2^62 to 2^64
2021-11-16SRBaseNF
no factor from 2^73 to 2^74
2018-08-18David HruskaNF
no factor from 2^72 to 2^73
2018-05-25David HruskaNF
no factor from 2^71 to 2^72
2018-03-01proxy2222NF
no factor from 2^70 to 2^71
2017-11-08La GüiraNF
no factor from 2^69 to 2^70
2017-03-09kompakkiNF
no factor from 2^68 to 2^69
2016-05-07DerekNF
no factor from 2^67 to 2^68
2015-04-15vwflat4NF
no factor from 2^66 to 2^67
2013-02-07Le ComteNF
no factor from 2^65 to 2^66
2011-01-26UschinatorNF
no factor from 2^64 to 2^65